Quantum beats in two-color photoionization to the spin-orbit split continuum of Ar
Quantum beats in two-color photoionization to the spin-orbit split continuum of Ar
复制标题
双色光电离中的量子跳动至 Ar 的自旋轨道分裂连续体
DOI:
10.1103/physreva.108.033107
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发表时间:
2023
影响因子:
2.9
通讯作者:
Sandhu, A.
中科院分区:
文献类型:
--
作者:
Alarcón, M. A.;Plunkett, A.;Wood, J. K.;Biswas, D.;Greene, C. H.;Sandhu, A.
We report a study of the quantum beats in two-color photoionization of argon. An attosecond extreme ultraviolet pulse train prepares an electronic wave packet of definite odd parity, with total angular momentum, targeting the states between 14.0 and 14.5 eV from the ground state. Two-photon ionization of this wave packet with a tunable infrared probe pulse makes the constituent states interfere in both continuum channels, corresponding to the core angular momentaand, respectively. We analyze photoelectron spectrograms as a function of the time delay of the probe pulse and identify oscillations due to several pairs of states through Fourier decomposition. We observe phase differences between the corresponding beat signals in the two spin-orbit split continua. Comparison of theoretical simulations with the experimental measurements allows us to interpret the amplitudes and phases of ionization signals. We express the observed phase differences in terms of the off-diagonal elements of the short-range scattering matrix and the dipole matrix elements to the continuum eigenchannels.
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DOI:
10.1088/0953-4075/21/23/005
发表时间:
1988
期刊:
Journal of Physics B
影响因子:
--
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--
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DOI:
--
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2006
期刊:
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DOI:
10.1088/1361-6455/ab9f0b
发表时间:
2020
期刊:
Molecular and Optical Physics
影响因子:
--
作者:
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通讯作者:
Feifel, R